I 



494 ^Ir. T. D. A. Cockeiell on new Species r/ Perdita. 



a level with the antennal sockets ; supraclypeal mark a trans- 

 verse band, more than twice as broad as long ; dog-ear marks 

 resent, separated by an interval from the lateral marks. 

 _Iesothorax very shiny, with scattered punctures, greenish 

 and hairy in front, otiierwise black and nearly nude ; hind 

 margin of prothorax with an interrupted cream-coloured band ; 

 tubercles cream-coloured, with a dark spot ; metathorax dark 

 bluish, contrasting with the black scutellum and postscu- 

 tellum ; tegul^ hyaline, with a cream-coloured spot; stigma 

 liyaline, with a brown margin ; nervures brown ; marginal 

 cell with tlie poststiamatal portion a little the longest ; second 

 submarginal large, narrowing rather more than half to mar- 

 ginal ; third discoidal very distinct ; legs brown-black, anterior 

 knees and anterior tibiae in front cream-colour ; abdomen 

 black, with straight pale yellow bands, more or less inter- 

 ruj)ted in the middle, at the extreme bases of segments 2 to 4, 

 and two spots representing a rudimentary band on the fifth 

 segment. Ventral surface dark. 



Var. a.— Clypeus all black, except a minute mark at each 

 side adjacent to the lateral face-marks; fifth abdominal seg- 

 ment without spots. 



Var. b. — Clypeus black, with the lateral corners cream- 

 coloured ; dog-earmarks mere specks; the three abdominal 

 lands reduced to inconspicuous widely separated pairs of 

 yellowish stripes. 



Bab. S. Jose de Guaymas, Mexico, April 10, 1898 {f.. 0. 

 Iloioard). Four specimens. 



Related to P. sexmaculata. In my table of Perdita in 

 Proc. Phil. Acad. 1896, it comes close to P. ea-clamans, from 

 which it is separated by many characters. The var. b approxi- 

 mates to tarda, but is not really related to that insect. 



Perdita Lucice, sp. n. 



^. — Length about 4 millim. 



Bright lemon-yellow, with dark markings. Head ordinary, 

 cheeks unarmed ; face nude, entirely yellow except the black 

 dots representing the frontal fovea ; cheeks yellow, sparsely 

 hairy ; vertex dark metallic green ; scape yellow, with a black 

 spot at the top behind ; flagellum yellow beneath and blackish 

 above ; piothorax and sides and under part of thorax entirely 

 yellow ; mesothorax practically nude, very shining dark 

 metallic olive-green, v\ ith the lateral margins narrowly yellow, 

 and a yellow ])atch near the hind margin ; scutellum yellow, 

 ^\ith the sides dark; postscutellum similarly coloured ; meta- 

 thorax dark blue dorsally, yellow at sides ; tegulfe hyaline ; 

 stigma hyaline, with a sepia-brown margin ; nervures light 

 brown ; marginal cell obliquely truncate, with its substigmatal 

 poition a liitle the longest ; second submarginal narrowed 



